Estimation of specific VO2max for elderly in cycle ergometer

Rodolfo de Alkmim Moreira Nunes, Juliana Brandão Pinto de Castro, Leandro de Lima e Silva, Jurandir Baptista da Silva, Erik Salum de Godoy, Vicente Pinheiro Lima, Gabriela Rezende de Oliveira Venturini, Flávio Boechat de Oliveira, Rodrigo Gomes de Souza Vale

Abstract

The aim of the present study was to develop and validate a specific estimation model of maximal oxygen consumption (VO2max) based on submaximal ventilatory indicators on a cycle ergometer test protocol in elderly men. We tested, using an incremental protocol, 181 healthy and non-athletes male volunteers, aged between 60 and 79 years old, randomly divided into two groups: group A, of estimation (n = 137), and group B, of validation (n = 44). The independent variables were: body mass in kg, second workload threshold (WT2) and heart rate at the second ventilatory threshold (VT2). The cross-validation method was used in group B, with group A serving as the basis for the model and the validation dataset. The results presented a multiple linear regression model for estimation of VO2max = 31.62 + 0.182 (WT2) – 0.302 (body mass) in mlO2/kg/min-1; adjusted R2 = 0.98 and SEE = 0.682 (mlO2/Kg/min-1). The construction of this specific model for healthy and non-athletes elderly men can demonstrate that it is possible to estimate VO2max with a minimum error (SEE < 1.00) from indicators of ventilatory thresholds obtained in an incremental submaximal test.

Keywords

Oxygen consumption; Ventilatory threshold; Submaximal test; Aged; Male

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DOI: https://doi.org/10.14198/jhse.2017.124.06





License URL: http://creativecommons.org/licenses/by-nc-nd/3.0/